Google App Password

How to connect
Gmail & Google Workspace.

Prepare an App Password for your Gmail or Google Workspace mailbox. Server settings are filled in for you.

Connection preview. You can read this guide and save a mailbox for later. Live authorization and warm-up remain off. Do not enter real credentials while the connection form is disabled.

Before you start

  • Access to the Google account that owns the mailbox.
  • 2-Step Verification and permission to create App Passwords.
  • For Workspace: your administrator must allow the required mail access.

Step-by-step setup

  1. Check your Google account security

    Open your Google Account security settings and confirm 2-Step Verification is on. MailboxWarm’s current Google connection uses an App Password, not Google OAuth.

  2. Create an App Password

    Open Google’s App Passwords page, give the app a recognizable name such as MailboxWarm, and copy the generated 16-character password. Keep it private; do not use your normal Google password.

  3. Choose Google in MailboxWarm

    Open Mailboxes → Add mailbox, choose Google, and enter your sending email address.

  4. Enter the connection details

    When connections are enabled, enter the Google App Password; the server settings are automatic. Choose Test & connect. MailboxWarm checks authentication and the encrypted connection without sending a message.

Connection settings

Match these values to the fields in MailboxWarm. Keep passwords and keys private.

Connection option
Google
SMTP host
smtp.gmail.com · automatic
SMTP encryption / port
STARTTLS / 587 · automatic
IMAP host / port
imap.gmail.com / 993 · TLS · automatic
Google App Password
Your generated App Password

Check the result

In today’s preview, expect Mailbox saved for later. When connections are enabled, a successful check shows Mailbox connected, with warming still paused. A failed connection check is not proof of delivery or a reason to add the same mailbox again.

Once live warming is available, choose the mailbox’s plan and schedule before starting. Connecting alone does not begin warm-up, and your provider’s sending limits still apply.

Open setup preview

Troubleshooting

App Passwords is missing

Managed-account rules, Advanced Protection, or security-key-only verification can restrict this option. Ask your administrator; do not turn off account protections.

A previously working password fails

Google revokes App Passwords when the account password changes. Generate a replacement when connections are available.

IMAP access fails

Personal Gmail has IMAP enabled automatically. For Workspace, ask your administrator to check mail-client access policies.

Provider resources

Provider menus and account policies can change. Use their official documentation for the latest requirements.

Settings reviewed September 12, 2026 · Documentation review, not a live connection test.